Tokyo Disneyland and DisneySea will raise the prices of their one-day passports on April 1, operator Oriental Land Co. has said.

The increase will be the first for the theme parks since April 2016, except for tax increase-related hikes, and is due to "improvement of the theme parks' value" following the opening of new attractions and enhanced availability of the smartphone app, the company said Thursday.

The price of a one-day passport for adults aged 18 or older will be raised to ¥8,200 ($75) from ¥7,500 for each park. The price for guests age 12 to 17 will go up ¥400 to ¥6,900, while that for children aged 4 to 11 will stay at ¥4,900.

The parks will also introduce discount tickets for people with disabilities — at ¥6,600, ¥5,500 and ¥3,900 respectively.

"We are advancing our barrier-free measures but some people may not be able to use certain attractions, depending on their disabilities," the company said.

The same day, Oriental Land released its third-quarter earnings, saying its group net profit had fallen 4.5 percent to ¥70.9 billion in the April to December period from a year earlier on sales of ¥390.2 billion, down 2.4 percent. It cited falling spending by visitors at the theme parks and a slump in its hotel business.